Detach the top gutter from the connected fittings.

Position yourself securely on a ladder or elevated platform at the appropriate height to access the top gutter.

Place the removed top gutter and the middle gutter on the ground.

Inspect both the top gutter and the middle gutter for any damage. Assess whether they need to be entirely replaced or if repairs can be made.

If the damaged area is serious, you can only replace with a new segment (looking for environmentally friendly materials to protect the earth).